A BLEVE occurs when a vessel containing a liquid is heated until the liquid turns to gas, increasing internal pressure.

Prepare for the IFSTA Firefighter II Exam with flashcards and multiple-choice questions, each offering hints and explanations. Get yourself ready to succeed!

Multiple Choice

A BLEVE occurs when a vessel containing a liquid is heated until the liquid turns to gas, increasing internal pressure.

Bleve happens when a vessel holding a liquid is heated enough that the liquid boils into high‑pressure vapor inside a sealed container. The vapor increases the internal pressure dramatically, and if the vessel can’t contain it, the vessel ruptures in a violent explosion, often with a massive fireball. So the description that matches this mechanism is the liquid being heated and turning into gas, which raises the internal pressure. The other scenarios describe cooling, condensation, or physical jostling, none of which produce the rapid pressure rise from vaporizing the liquid inside a pressurized vessel.

Bleve happens when a vessel holding a liquid is heated enough that the liquid boils into high‑pressure vapor inside a sealed container. The vapor increases the internal pressure dramatically, and if the vessel can’t contain it, the vessel ruptures in a violent explosion, often with a massive fireball. So the description that matches this mechanism is the liquid being heated and turning into gas, which raises the internal pressure. The other scenarios describe cooling, condensation, or physical jostling, none of which produce the rapid pressure rise from vaporizing the liquid inside a pressurized vessel.

More practice questions